Improve reliability of Stitch webhook

[chadokruse]

• [x] Explore why adding retry-axios has not improved error rate of Webhooks
• After clearing Cloudflare cache, errors level now at standard/acceptable levels

Related to Cloudflare somehow? Would explain recent Enativ-based run, where 50% appears in Stitch logs as being captured, while 50% threw the generic Network Error.

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• [x] Add single retry method
• [x] Only track errors on retry, not on first fail
• [x] Is Vue triggering a new Axios call after search refinements? A: No
• [x] Figure out root cause of silent Axios failures (see "troubleshooting" issue) A: pre-flight issue
• [x] Implement method to reduce silent Axios failures (see "troubleshooting" issue)

Re: root cause, question is same as this thread in SO

The request was made but no response was received

Retry mechanisms Retry Axios npm package https://www.npmjs.com/package/retry-axios

Homegrown example(s) https://stackoverflow.com/a/49976113/1944104 https://github.com/axios/axios/issues/164 https://github.com/axios/axios/issues/934

[chadokruse]

No longer needed as moving to Stitch auth. Using Stitch Webhook was an interim fix to the high error rate using Stitch auth, which was likely due to this Stitch bug.

[chadokruse]

Re-opening as Stitch Webhooks will likely always play a role. They are perfect for pulling in fully public information, especially for non-logged in users as they do NOT require the Stitch SDK (e.g. fast page loads)